Door opening mechanism and electrical equipment

Abstract

The utility model discloses a door opening mechanism and electrical equipment, the door opening mechanism is mounted on an equipment body, the door opening mechanism comprises: a power member rotatably mounted on the equipment body, the power member is provided with a first acting surface and a second acting surface distributed along the circumferential direction; the door opening piece is in power coupling connection with the power piece so as to be driven by the power piece to reciprocate between a recovery position and an ejection position; the triggering piece is rotationally mounted on the equipment body under the driving of the power piece, and the rotating axis of the triggering piece is parallel to the rotating axis of the power piece; when the door opening piece is located at the recovery position or the ejection position, the trigger piece makes contact with the first acting face and triggers the trigger switch. When the door opening piece is driven by the power piece to move between the recovery position and the ejection position, the trigger piece makes contact with the second acting face and enables the trigger switch to release triggering.

Description

Technical Field

[0001] This application belongs to the field of electrical equipment technology, and in particular relates to a door opening mechanism and electrical equipment. Background Technology

[0002] Electrical appliances such as refrigerators typically have a self-locking force after closing, making them difficult to open and requiring manual operation, which is inconvenient in some usage scenarios. Related technologies use an electric push rod to automatically open the door, but this usually requires multiple position switches to determine the push rod's position in order to control the motor's start, stop, and direction. This results in a complex structure, large footprint, and high manufacturing costs. Utility Model Content

[0003] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a door opening mechanism and electrical device, which has a simple position determination structure, occupies little space, and has low production cost.

[0004] Firstly, this application provides a door opening mechanism installed on the device body. The door opening mechanism includes:

[0005] The power component is rotatably mounted on the equipment body, and the power component has a first working surface and a second working surface distributed circumferentially.

[0006] The door opening component is dynamically coupled to the power component, so that it reciprocates between the retracted position and the ejected position under the drive of the power component;

[0007] The device includes a trigger switch and a trigger element. The trigger element is mounted on the device body and rotates under the drive of the power element. The rotation axis of the trigger element is parallel to the rotation axis of the power element.

[0008] Specifically, when the door opening component is in the retraction or ejection position, the triggering component contacts the first working surface and triggers the triggering switch; when the door opening component is driven by the power component and moves between the retraction and ejection positions, the triggering component contacts the second working surface and causes the triggering switch to deactivate.

[0009] According to the door opening mechanism of this application, a power component drives the door opening component to reciprocate, thereby automatically opening the door. By setting a trigger and a trigger switch, the trigger rotates under the action of a first and a second working surface. The trigger switch can be triggered when the door opening component is in the retracted or extended position. During the movement of the door opening component between the retracted and extended positions, the trigger deactivates the trigger switch. Therefore, the position of the door opening component can be determined by the triggering timing of a single trigger switch, thereby controlling the rotation and stopping of the power component. The structure is simple, occupies little space, and the single trigger switch and trigger component reduce production costs.

[0010] According to one embodiment of this application, along the rotation plane of the power member, the trigger member is disposed on the periphery of the power member, and the first action surface is closer to the rotation axis of the power member than the second action surface.

[0011] According to one embodiment of this application, the trigger includes a first contact portion acting on a power member and a second contact portion acting on a trigger switch; the first contact portion and the second contact portion are distributed on both sides of the rotation axis of the trigger along the rotation plane of the power member.

[0012] According to one embodiment of this application, the trigger includes:

[0013] The trigger rod has a first contact portion and a second contact portion respectively located at both ends of the trigger rod;

[0014] The rotating rod is rotatably mounted on the equipment body, with one end of the rotating rod connected to the middle of the trigger rod.

[0015] According to one embodiment of this application, there are two first working surfaces; the two first working surfaces are distributed circumferentially at both ends of the second working surface.

[0016] According to one embodiment of this application, the power component includes a gear portion, a cam portion, and two recessed portions; along the circumferential direction of the power component, the two recessed portions are respectively disposed between two ends of the gear portion and the cam portion, the concave surfaces of the two recessed portions form two first working surfaces, and the convex surfaces of the cam portion form a second working surface;

[0017] The door opening component is equipped with a rack that meshes with the gear section.

[0018] According to one embodiment of this application, the gear portion and the rack portion are respectively provided with a first anti-mistake portion and a second anti-mistake portion that cooperate with each other.

[0019] According to one embodiment of this application, the door opening mechanism further includes a drive device, and the output end of the drive device is provided with a first transmission wheel rotatably mounted on the device body;

[0020] The power component includes a second transmission wheel coaxially connected to the gear section. The second transmission wheel meshes with the first transmission wheel, and the speed ratio between the first transmission wheel and the second transmission wheel tends to decrease as the door opening component moves from the retracted position to the ejected position.

[0021] According to one embodiment of this application, both the first transmission wheel and the second transmission wheel are eccentrically arranged; and / or, both the first transmission wheel and the second transmission wheel are non-circular gears.

[0022] According to one embodiment of this application, the door opening mechanism further includes:

[0023] The elastic element connects the device body and the trigger element. The elastic element is used to apply a force to the trigger element to drive it into contact with the power element.

[0024] According to one embodiment of this application, the door opening mechanism further includes a control board and a motor, the motor being dynamically coupled to a power component for driving the power component to rotate;

[0025] In one configuration, the trigger switch is integrated on the control board; or, both the trigger switch and the motor are integrated on the control board.

[0026] Secondly, this application provides an electrical device. The electrical device includes:

[0027] The equipment body includes a housing and a door, with the door covering the housing;

[0028] The door opening mechanism of any of the technical solutions in the first aspect is installed on the box or door, and the door opening component drives the door to open relative to the box during the process of moving from the recycling position to the ejection position.

[0029] The beneficial effects of the electrical equipment provided in the second aspect of this application are the same as those of the door opening mechanism provided in the first aspect, and will not be repeated here.

[0030] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0031] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0032] Figure 1 This is a schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0033] Figure 2 This is a partial structural schematic diagram of the door opening mechanism provided in an embodiment of this application;

[0034] Figure 3 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0035] Figure 4 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0036] Figure 5 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0037] Figure 6 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0038] Figure 7 This is a schematic diagram of the structure of the power component provided in the embodiments of this application;

[0039] Figure 8 This is another structural schematic diagram of the power component provided in the embodiments of this application;

[0040] Figure 9 This is a partial structural schematic diagram of the electrical equipment provided in the embodiments of this application.

[0041] Figure label:

[0042] 100. Equipment body; 110. Cabinet; 120. Door;

[0043] 200. Door opening mechanism; 210. Power component; 211. Power wheel; 2111. First working surface; 2112. Second working surface; 2113. Gear section; 2114. First anti-foolproof part; 2115. Cam section; 2116. Groove section; 212. Second transmission wheel; 220. Door opening component; 221. Rack section; 222. Second anti-foolproof part; 230. Trigger switch; 240. Trigger element; 241. Trigger rod; 2411. First contact part; 2412. Second contact part; 243. Rotating rod; 250. Elastic component; 260. Control panel; 270. Drive device; 271. Motor; 272. Gear set; 273. First transmission wheel; 280. Housing. Detailed Implementation

[0044] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0045] The following is for reference. Figures 1-9 This application describes a door opening mechanism and electrical device according to embodiments thereof.

[0046] Please see Figure 1 and Figure 2 This application provides a door opening mechanism 200, which is installed on the device body 100 and is used to realize the function of automatically opening the door body 120.

[0047] The door opening mechanism 200 includes a power component 210, a door opening component 220, a trigger switch 230, and a trigger component 240.

[0048] The power component 210 is rotatably mounted on the equipment body 100, and the door opening component 220 is poweredly coupled to the power component 210 so as to reciprocate between the recovery position and the ejection position under the drive of the power component 210.

[0049] The power component 210 is the power output component of the door opening mechanism 200. The power component 210 is rotatably mounted on the equipment body 100. Rotation of the power component 210 drives the door opening component 220 to reciprocate between the retracted position and the ejected position. When the door opening component 220 is in the retracted position, it retracts into the equipment body 100 and does not interfere with the closing of the door 120, which can be in a closed state. As the door opening component 220 moves from the retracted position to the ejected position under the drive of the power component 210, it drives the door 120 to open. When the door opening component 220 is in the ejected position, it moves to its furthest point, achieving the maximum opening angle of the door 120.

[0050] The trigger switch 230 can be a mechanical trigger switch 230 or a magnetic induction trigger switch 230, etc., and the specific form is not limited. In one example, the trigger switch 230 is a mechanical trigger switch 230, which is triggered by direct contact or pressing of the trigger element 240, and the trigger is deactivated by releasing the contact or pressing. The trigger switch 230 can send an induction signal when triggered.

[0051] The trigger 240 is rotatably mounted on the equipment body 100 under the drive of the power component 210, and the rotation axis of the trigger 240 is parallel to the rotation axis of the power component 210.

[0052] The trigger element 240 is rotatably mounted on the device body 100, and rotates between the trigger position that triggers the trigger switch 230 and the release position that de-triggers the trigger switch 230 under the drive of the power element 210.

[0053] The power component 210 has a first working surface 2111 and a second working surface 2112 distributed circumferentially. The first working surface 2111 and the second working surface 2112 can act on the trigger component 240. Specifically, the first working surface 2111 and the second working surface 2112 are distributed circumferentially along the rotation plane of the power component 210, so that during the rotation of the power component 210, either the first working surface 2111 or the second working surface 2112 can act on the trigger component 240. By setting different curvatures or radii for the different working surfaces, the trigger component 240 can be driven to rotate during contact with different working surfaces, or during the switching between the first working surface 2111 and the second working surface 2112. Therefore, while the power component 210 drives the door opening component 220 to move, it can also drive the trigger component 240 to rotate and trigger or de-trigger the trigger switch 230, resulting in a simple structure.

[0054] When the door opening member 220 is in the retraction position or the ejection position, the trigger member 240 contacts the first working surface 2111 and triggers the trigger switch 230; when the door opening member 220 is driven by the power member 210 and moves between the retraction position and the ejection position, the trigger member 240 contacts the second working surface 2112 and causes the trigger switch 230 to be deactivated.

[0055] When the door opener 220 is in the retracted or ejected position, that is, when the door opener 220 is at the two ends of its travel stroke, the trigger member 240 contacts the first working surface 2111 and rotates to the trigger position, thereby triggering the trigger switch 230 and sending a sensing signal. Furthermore, it can be understood that when the power member 210 rotates to the point where the first working surface 2111 contacts the trigger member 240, the trigger member 240 rotates to the trigger position.

[0056] During the movement of the door opening member 220 between the retracted position and the ejected position, driven by the power member 210, that is, when the door opening member 220 is between the two endpoints of its active stroke, the trigger member 240 contacts the second working surface 2112 and rotates to the release position, thereby deactivating the trigger switch 230 and stopping the transmission of the sensing signal. It can be understood that when the power member 210 rotates to the point where the second working surface 2112 contacts the trigger member 240, it drives the trigger member 240 to rotate to the release position.

[0057] Please see Figures 3 to 6 , Figures 3 to 6 The process of the door opening component 220 moving from the retracted position to the ejected position is demonstrated. In actual operation, the user sends an opening signal via a physical button on the device body 100, the control panel, or a mobile device. Upon receiving the opening signal, the door opening mechanism 200 controls the power component 210 to rotate. The rotation of the power component 210 drives the door opening component 220 to move from the retracted position to the ejected position, thereby opening the door body 120. Simultaneously, the second action surface 2112 of the power component 210 contacts the trigger component 240 and drives the trigger component 240 to rotate to the release position, and the trigger switch 230 is in the de-triggered state. When the door opening component 220 is in the extended position, the door 120 is opened to its maximum angle possible by the ejection mechanism. At this time, the first action surface 2111 of the power component 210 contacts the trigger component 240 and drives the trigger component 240 to rotate to the trigger position. The trigger component 240 triggers the trigger switch 230 and sends the first sensing signal. After receiving the first sensing signal, the door opening mechanism 200 controls the power component 210 to stop rotating, thereby stopping the door opening component 220 from ejecting. The door opening mechanism 200 can control the power component 210 to reverse after waiting for a preset time (e.g., 0.1s). It should be noted that the duration of this preset time is not limited. Figures 6 to 3Under the reverse action of the power component 210, the door opening component 220 is driven to move from the ejected position to the retracted position. At the same time, the second working surface 2112 of the power component 210 contacts the trigger component 240 and drives the trigger component 240 to rotate to the release position, and the trigger switch 230 is in the de-triggered state. When the door opening component 220 moves to the retracted position, the door opening component 220 is retracted into the equipment body 100, which does not affect the normal closing of the door body 120, and avoids the door opening component 220 interfering with or touching the user when it is in the ejected position, thus avoiding safety hazards. At this time, the first working surface 2111 of the power component 210 contacts the trigger component 240 and drives the trigger component 240 to rotate to the trigger position. The trigger component 240 triggers the trigger switch 230 and sends a second sensing signal. After receiving the second sensing signal, the door opening mechanism 200 controls the power component 210 to stop rotating, so that the door opening component 220 stops its retraction action and completes one door opening action of the door opening mechanism 200.

[0058] During the entire door opening process, the door opening mechanism 200 receives an opening signal and controls the power component 210 to rotate; upon receiving the first sensing signal from the trigger switch 230, it controls the power component 210 to stop, and the door 120 opens; after waiting for a preset time, it controls the power component 210 to reverse; upon receiving the second sensing signal from the trigger switch 230, it controls the power component 210 to stop, and the door opening component 220 retracts, completing one door opening action. By utilizing the cooperation of the power component 210 and the trigger component 240, the trigger component 240 can be rotated within a small range to trigger the same trigger switch 230 twice, and the position of the door opening component 220 is determined by two sensing signals emitted by a single trigger switch 230. This method occupies little space, has a clear control logic, optimizes the overall spatial layout, and reduces production costs.

[0059] According to the door opening mechanism 200 provided in this application embodiment, the power component 210 drives the door opening component 220 to reciprocate so as to drive the door body 120 to open automatically. By setting a trigger component 240 and a trigger switch 230, the trigger component 240 rotates under the action of the first action surface 2111 and the second action surface 2112. The trigger switch 230 can be triggered when the door opening component 220 is in the retracted position and the ejected position. During the movement of the door opening component 220 between the retracted position and the ejected position, the trigger component 240 de-triggers the trigger switch 230. Thus, the position of the door opening component 220 can be determined by the triggering timing of a single trigger switch 230, thereby controlling the rotation and stopping of the power component 210. The structure is simple and occupies little space, and the single trigger switch 230 and trigger component 240 save production costs.

[0060] Please see Figure 1 and Figure 2In some embodiments, the door opening mechanism 200 may include a housing 280, which is fixedly installed on the equipment body 100. The door opening component 220, the power component 210, the trigger component 240 and the trigger switch 230 can all be installed inside the housing 280. The housing 280 serves to protect the door opening mechanism 200 and improve the integration. When the door opening mechanism 200 is assembled onto the equipment body 100 as an integrated component, the assembly efficiency can be greatly improved.

[0061] When the door opening component 220 is in the retracted position, the door opening component 220 can be completely retracted into the housing 280, or at least partially left outside the housing 280, gradually extending outside the housing 280 during the movement from the retracted position to the ejected position.

[0062] The housing 280 may be provided with a guide groove that guides the movement of the door opening component 220 and a limiting groove that limits the movement of the power component 210, so as to improve the stability of the operation of the door opening component 220 and the power component 210.

[0063] Please see Figures 2 to 6 According to some embodiments of this application, along the rotation plane of the power member 210, the trigger member 240 is disposed on the periphery of the power member 210, and the first action surface 2111 is closer to the rotation axis of the power member 210 than the second action surface 2112.

[0064] Because the rotation axis of the trigger 240 is parallel to the rotation axis of the power component 210, the trigger 240 can rotate on the same rotation plane as the power component 210. By placing the trigger 240 on the periphery of the power component 210, the power component 210 can directly act on the trigger 240 during rotation to drive the trigger 240 to rotate, and the interference between the trigger 240 and the power component 210 can be reduced, thus reducing the space occupied by the entire door opening mechanism 200 in the axial direction of the power component 210.

[0065] The first acting surface 2111 and the second acting surface 2112 can be parallel to the rotation axis of the power component 210, so that the first acting surface 2111 and the second acting surface 2112 can better contact the trigger component 240 and improve the stability of the transmission. It is understood that in order to enable the trigger component 240 to rotate when the first acting surface 2111 and the second acting surface 2112 act on the trigger component 240 respectively, the perpendicular distances between the first acting surface 2111 and the second acting surface 2112 and the rotation axis of the power component 210 are different.

[0066] The first working surface 2111 is positioned closer to the rotation axis of the power component 210 than the second working surface 2112. Therefore, when the first working surface 2111 switches to the second working surface 2112, the trigger component 240 can rotate a certain angle under the push of the second working surface 2112 and remain there. This ensures that the trigger switch 230 remains deactivated when the trigger component 240 is in contact with the second working surface 2112.

[0067] Please see Figure 3 According to some embodiments of this application, the trigger 240 may include a first contact portion 2411 acting on the power member 210 and a second contact portion 2412 acting on the trigger switch 230; along the rotation plane of the power member 210, the first contact portion 2411 and the second contact portion 2412 may be distributed on both sides of the rotation axis of the trigger 240.

[0068] The first contact portion 2411 is used to abut against the first working surface 2111 or the second working surface 2112 to drive the trigger member 240 to rotate under the rotation of the power member 210. The second contact portion 2412 acts on the trigger switch 230, that is, when the second trigger portion contacts the trigger switch 230, the trigger switch 230 is triggered, and when the second trigger portion separates from the trigger switch 230, the trigger switch 230 is detrimental.

[0069] The first contact portion 2411 and the second contact portion 2412 are distributed on both sides of the rotation axis of the trigger member 240, so that when the first contact portion 2411 rotates in one direction under the drive of the power member 210, the second contact portion 2412 rotates in the opposite direction. By setting the trigger switch 230 on one side of the rotation direction of the second contact portion 2412, and switching the surface of the power member 210 in contact with the first contact portion 2411 from the first working surface 2111 to the second working surface 2112, the trigger member 240 rotates in the same direction, thus enabling the second contact portion 2412 to contact the trigger switch 230 twice during one door opening action, and to issue two trigger signals.

[0070] Please see Figure 3 According to some embodiments of this application, the trigger 240 may include a trigger rod 241 and a rotating rod 243. The first contact portion 2411 and the second contact portion 2412 are respectively disposed at both ends of the trigger rod 241. The rotating rod 243 is rotatably mounted on the device body 100, and one end of the rotating rod 243 is connected to the middle of the trigger rod 241.

[0071] The first contact portion 2411 and the second contact portion 2412 are respectively disposed at both ends of the trigger rod 241. To ensure better contact and relative sliding between the trigger rod 241 and the first working surface 2111 or the second working surface 2112, and to push the first trigger portion to displace when switching between the first working surface 2111 and the second working surface 2112, the force direction of the trigger rod 241 on the rotation plane of the power member 210 is perpendicular to the first working surface 2111 or the second working surface 2112. In one example, the extension direction of the trigger rod 241 may correspond to the rotation axis of the power member 210.

[0072] The rotating rod 243 is rotatably mounted on the equipment body 100 and connected to the trigger rod 241, so that the trigger rod 241 can rotate under the drive of the rotating rod 243. Specifically, one end of the rotating rod 243 is connected to the middle of the trigger rod 241, wherein the rotation axis of the trigger member 240 is located in the middle of the trigger rod 241, so that the line connecting the first trigger part and the rotation axis of the trigger member 240 is always set at an angle of less than 90 degrees with the force direction of the first trigger part.

[0073] Therefore, even if the first acting surface 2111 is closer to the rotation axis of the power member 210 relative to the second acting surface 2112, whether the acting surface acting on the first contact portion 2411 switches from the first acting surface 2111 to the second acting surface 2112 or vice versa, it can drive the first trigger portion to rotate in the same direction. This allows both forward and reverse rotation of the power wheel 211 to drive the trigger member 240 to rotate in the same direction, enabling the same trigger switch 230 to be triggered twice.

[0074] In some embodiments, when the door opening member 220 moves from the retracted position to the ejected position, the power member 210 can rotate exactly one revolution, thereby providing a first working surface 2111 and a second working surface 2112 on the periphery of the power member 210. When the door opening member 220 is in the retracted position, the trigger member 240 contacts the first working surface 2111. When the door opening member 220 moves from the retracted position to the ejected position, the power member 210 rotates one revolution, so that the trigger member 240 passes the second working surface 2112 and re-contacts the first working surface 2111. It can be understood that when the door opening member 220 moves from the ejected position to the retracted position, the power member 210 reverses one revolution.

[0075] Please see Figure 3 According to some embodiments of this application, there may be two first working surfaces 2111; the two first working surfaces 2111 may be distributed circumferentially at both ends of the second working surface 2112.

[0076] By setting two first working surfaces 2111 at each end of the second working surface 2112, the trigger element 240 can still trigger the trigger switch 230 twice even when the rotational stroke of the power wheel 211 is limited.

[0077] When the door opening member 220 is in the retracted position, the trigger member 240 contacts the first working surface 2111 at one end of the second working surface 2112; when the door opening member 220 moves from the retracted position to the ejected position, the power member 210 rotates to make the trigger member 240 contact the second working surface 2112; when the door opening member 220 is in the ejected position, the trigger member 240 contacts the first working surface 2111 at the other end of the second working surface 2112. The above actions are repeated when the door opening member 220 moves from the ejected position to the retracted position.

[0078] In some embodiments, the door opening component 220 and the power wheel 211 can be coupled by a gear and rack, or by a roller and belt, etc., and the specific method is not limited.

[0079] Please see Figure 7 and Figure 8 According to some embodiments of this application, the power member 210 may include a gear portion 2113, a cam portion 2115, and two recessed portions 2116; along the circumferential direction of the power member 210, the two recessed portions 2116 are respectively disposed between the two ends of the gear portion 2113 and the cam portion 2115, the concave surfaces of the two recessed portions 2116 form two first working surfaces 2111, and the convex surfaces of the cam portion 2115 form a second working surface 2112; the door opening member 220 is provided with a rack portion 221 that meshes with the gear portion 2113.

[0080] The power component 210 may include a power wheel 211, and a gear portion 2113, a cam portion 2115, and two recessed portions 2116 are distributed circumferentially along the power wheel 211. The gear portion 2113 meshes with the rack portion 221 of the door opening component 220, so that when the power wheel 211 rotates, the rack portion 221 is driven to move through the gear portion 2113, thereby driving the door opening component 220 to move.

[0081] The concave surface of the groove 2116 forms the first working surface 2111, and the convex surface of the cam 2115 forms the second working surface 2112. When the power wheel 211 rotates to the point where the groove 2116 is directly opposite the trigger 240, the first contact portion 2411 of the trigger 240 abuts against the bottom of the groove 2116. At this time, the second contact portion 2412 triggers the trigger switch 230. The rotation of the power wheel 211 causes the first contact portion 2411 to disengage from the groove 2116 and rotates under the drive of the cam 2115, thereby separating the second contact portion 2412 from the trigger switch 230.

[0082] By integrating the gear part 2113, the cam part 2115 and the groove part 2116 onto a single power wheel 211, the overall structure of the power component 210 is simplified, the spatial layout is optimized, and production costs are reduced.

[0083] Please see Figure 4 According to some embodiments of this application, the gear portion 2113 and the rack portion 221 are respectively provided with a first anti-mistake portion 2114 and a second anti-mistake portion 222 that cooperate with each other.

[0084] Understandably, because the gear section 2113 is not a fully toothed configuration, and the rotation angle of the power component 210, the moving position of the door opening component 220, and the rotation position of the trigger component 240 correspond to each other, it is necessary to ensure accurate meshing between the gear section 2113 of the power component 210 and the rack section 221 of the door opening component 220 during assembly to ensure the accurate and stable operation of the door opening mechanism 200. By providing a first mis-detection part 2114 and a second mis-detection part 222 that cooperate with each other on the gear section 2113 and the rack section 221 respectively, the first mis-detection part 2114 and the second mis-detection part 222 are connected in a corresponding manner during assembly, thereby improving the accuracy and stability of assembly and increasing production efficiency.

[0085] In one example, the gear portion 2113 is provided with a first anti-misalignment portion 2114, which can be an anti-misalignment protrusion. The anti-misalignment protrusion is connected between two adjacent teeth of the gear portion 2113 and is directly opposite to the rack portion 221. The rack portion 221 can be provided with an anti-misalignment groove. The teeth of the rack portion 221 that mesh with the aforementioned two teeth are provided with anti-misalignment grooves corresponding to the anti-misalignment protrusions. During assembly, the anti-misalignment protrusions and anti-misalignment grooves must be aligned and connected. Without affecting meshing, it is not easy to assemble incorrectly.

[0086] In another example, the location of the anti-mistake protrusion is not limited. The anti-mistake protrusion extending laterally can be provided on the tooth of the gear part 2113 at the end, and the anti-mistake groove can be provided at the corresponding end position of the rack part 221.

[0087] Please see Figure 2 and Figure 3 According to some embodiments of this application, the door opening mechanism 200 further includes a drive device 270. The output end of the drive device 270 may be provided with a first transmission wheel 273 rotatably mounted on the device body 100. The power component 210 includes a second transmission wheel 212 coaxially connected to the gear part 2113. The second transmission wheel 212 meshes with the first transmission wheel 273. During the process of the door opening component 220 moving from the retracted position to the ejected position, the speed ratio between the first transmission wheel 273 and the second transmission wheel 212 tends to decrease.

[0088] It is understood that the drive device 270 may include a motor 271, and the torque output by the motor 271 is transmitted to the power component 210 through a gear set 272. Specifically, the output end of the gear set 272 is provided with a first transmission wheel 273, and the power component 210 includes a second transmission wheel 212 coaxially connected to the gear part 2113, that is, the second transmission wheel 212 is coaxially connected to the power wheel 211. The first transmission wheel 273 meshes with the second transmission wheel 212, and the torque output by the motor 271 is output to the second transmission wheel 212 through the first transmission wheel 273, thereby driving the power wheel 211 to rotate, thereby driving the door opening component 220 to move and the trigger component 240 to rotate.

[0089] In one example, the drive wheel 211 and the second transmission wheel 212 can be integrally formed to improve assembly efficiency and reduce production costs.

[0090] In related technologies, the doors of electrical appliances (such as refrigerators) have self-locking mechanisms or magnetic door seals, requiring a large opening force. Once opened, the required pushing force decreases, and some doors will spring open on their own. Generally, the push rod extends at a constant speed, and after the door springs open, the push rod cannot continue to push the door, allowing the door to open only a small angle, preventing large-angle opening.

[0091] In this design, during the process of the door opening component 220 moving from the retracted position to the ejected position, the speed ratio between the first transmission wheel 273 and the second transmission wheel 212 tends to decrease. That is, as the door opening component 220 ejects, while the rotational speed of the first transmission wheel 273 remains constant, the rotational speed of the second transmission wheel 212 tends to increase, which in turn causes the rotational speed of the power wheel 211 to increase, thus increasing the ejection speed of the door opening component 220. This results in gradual acceleration during the ejection process, which can be achieved after the door 120 is opened, reaching its maximum pushing speed when it reaches the ejected position, allowing the door 120 to open at a large angle under the action of acceleration.

[0092] Please see Figures 2 to 6 According to some embodiments of this application, both the first transmission wheel 273 and the second transmission wheel 212 can be eccentrically arranged; and / or, both the first transmission wheel 273 and the second transmission wheel 212 can be non-circular gears.

[0093] In one example, both the first drive wheel 273 and the second drive wheel 212 are eccentrically positioned.

[0094] By appropriately setting the eccentricity and initial phase angle of the two eccentric gears, the rotational speed of the second transmission wheel 212 can be increased. By adjusting their initial relative position (phase angle), the second transmission wheel 212 is in a relatively slow initial rotational state during the initial meshing stage, i.e., when the door opening member 220 is in the retracted position. As the gears rotate, the meshing point position changes continuously due to the eccentricity, and through a reasonable eccentricity setting, the rotational radius of the second transmission wheel 212 (equivalent to the effective pitch circle radius) increases as the door opening member 220 moves from the retracted position to the ejected position, thereby increasing the rotational speed of the second transmission wheel 212.

[0095] In another example, the first drive wheel 273 and the second drive wheel 212 can be non-circular gears.

[0096] The pitch curve shape of a non-circular gear determines the variation law of its transmission ratio. When both the first transmission wheel 273 and the second transmission wheel 212 are non-circular gears, the speed of the second transmission wheel 212 can be gradually increased by rationally designing their pitch curve shapes. For example, when both the first transmission wheel 273 and the second transmission wheel 212 are elliptical gears, this can be achieved by rationally designing the ratio of the major axis to the minor axis of the ellipse. In the initial meshing stage, that is, when the door opening member 220 is in the retracted position, meshing begins near the position where its major axis is close to the minor axis of the second transmission wheel 212. As the door opening member 220 moves from the retracted position to the ejected position, because the radius of curvature of the elliptical gear is larger at the major axis and smaller at the minor axis, under the condition of pure rolling of the pitch curve, according to the gear transmission ratio formula (the transmission ratio is equal to the ratio of the radius of curvature of a certain point of the driving gear pitch curve to the radius of curvature of the corresponding meshing point of the driven gear pitch curve), the speed of the second transmission wheel 212 will increase during the process of the door opening member 220 moving from the retracted position to the ejected position.

[0097] In addition to elliptical gears, the first transmission wheel 273 and the second transmission wheel 212 can also be designed with other non-circular gears with special pitch curves. For example, a non-circular gear with a pitch curve similar to a logarithmic spiral can be designed, but details will not be elaborated here.

[0098] In some other examples, the first drive wheel 273 and the second drive wheel 212 may also be eccentrically arranged non-circular gears to further increase the maximum speed of the door opening member 220 when it moves to the top position. For specific implementation, please refer to the aforementioned examples, which will not be repeated here.

[0099] Please see Figures 2 to 6 According to some embodiments of this application, the door opening mechanism 200 may also include an elastic element 250. The elastic element 250 is connected between the device body 100 and the trigger 240, and the elastic element 250 is used to apply a force to the trigger 240 to drive the trigger 240 into contact with the power element 210.

[0100] By setting the elastic element 250 to keep the trigger element 240 in contact with the power element 210, it is ensured that the first working surface 2111 and the second working surface 2112 of the power element 210 can effectively act on the trigger element 240, thereby driving the trigger element 240 to rotate. When the door opening member 220 is in the retracted position or the ejected position, the first contact portion 2411 of the trigger element 240 abuts against the first working surface 2111 of the groove portion 2116 under the action of the elastic element 250, and the second contact portion 2412 triggers the trigger switch 230. During the process of the door opening member 220 moving from the retracted position to the ejected position, or from the ejected position to the retracted position, the cam portion 2115 drives the trigger element 240 to rotate against the elastic force of the elastic element 250, the second contact portion 2412 separates from the trigger switch 230 and releases the trigger, and the first contact portion 2411 and the second working surface 2112 remain in contact under the action of the elastic element 250.

[0101] The elastic element 250 can be a spring or an elastic rubber ring, etc., and there is no specific limitation.

[0102] In one example, the elastic element 250 may be connected to one end of the rotating rod 243 away from the trigger rod 241, and apply an elastic force away from the power element 210 to the other end of the rotating rod 243 away from the trigger rod 241, so that the trigger rod 241 has a tendency to remain in contact with the power element 210.

[0103] Please see Figure 2 and Figure 3 According to some embodiments of this application, the door opening mechanism 200 further includes a control board 260 and a motor 271. The motor 271 is poweredly coupled to the power component 210 and is used to drive the power component 210 to rotate. The trigger switch 230 is integrated on the control board 260; or, the trigger switch 230 and the motor 271 are both integrated on the control board 260.

[0104] The control board 260 is electrically connected to the motor 271 to control the rotation or stop of the motor 271, and can also achieve forward or reverse rotation. The torque of the motor 271 can be transmitted to the power component 210 through the gear set 272 to drive the power component 210 to rotate.

[0105] In one example, the trigger switch 230 is integrated on the control board 260, that is, the trigger switch 230 is directly mounted on the control board 260, and there is no wire connection between the trigger switch 230 and the control board 260.

[0106] Because the power component 210 and the trigger component 240 work together, a single trigger switch 230 can detect the two operating positions of the door opening component 220. This eliminates the need for the trigger switch 230 to be designed based on the operating position of the door opening component 220, allowing it to be directly integrated onto the control board 260. This further simplifies assembly, optimizes the overall spatial layout, and reduces production costs.

[0107] In another example, both the trigger switch 230 and the motor 271 are integrated on the control board 260. That is, the trigger switch 230 is installed on the control board 260, and the electrical connection terminal of the motor 271 is directly connected to the control board 260, which further improves the integration of the entire door opening mechanism 200, makes the space layout more reasonable, and reduces the space occupied by the door opening mechanism 200.

[0108] In actual operation, taking the front-to-back direction of the door opening component 220 as an example, the door opening component 220 and the trigger component 240 are distributed on the left and right sides of the power component 210. The control plate 260 extends away from the power component 210 and along the front-to-back direction. In the front-to-back direction, the power component 210 is located near the top end of the door opening component 220, the trigger component 240 and the trigger switch 230 correspond to the power component 210, and the motor 271 is located near the retraction end of the door opening component 220.

[0109] Please see Figure 9 This application also provides an electrical device.

[0110] The appliance can be a refrigerator, cabinet, dishwasher, freezer, wine cabinet, etc., and there are no specific limitations.

[0111] The electrical device includes a device body 100 and a door opening mechanism 200 as described in any of the above technical solutions.

[0112] The equipment body 100 includes a housing 110 and a door 120. The door 120 covers the housing 110. The door opening mechanism 200 is installed on the housing 110 or the door 120. The door opening mechanism 220 drives the door 120 to open relative to the housing 110 during the process of moving from the recycling position to the ejection position.

[0113] The door opening mechanism 200 can be installed on the housing 110 or on the door 120.

[0114] In one example, the door opening mechanism 200 is mounted on the housing 110, and the door opening member 220 is directly opposite the door 120. During the process of moving from the retracted position to the ejected position, the door opening member 220 applies a pushing force to the door 120 to open the door 120 relative to the housing 110.

[0115] In another example, the door opening mechanism 200 is mounted on the door body 120, and the door opening member 220 is directly opposite the box body 110. During the process of moving from the retraction position to the ejection position, the door opening member 220 applies a pushing force to the box body 110, causing the door body 120 to open relative to the box body 110 under the reaction force.

[0116] It should be noted that since the electrical equipment in this application embodiment includes the door opening mechanism 200 of any of the above technical solutions, it has the technical features and beneficial effects of the door opening mechanism 200 of any of the above technical solutions, which will not be repeated here.

[0117] According to the embodiments of this application, the electrical equipment improves the ease of use of the electrical equipment and reduces the overall production cost by setting the door opening mechanism 200.

[0118] In some embodiments, the device body 100 may be provided with multiple door opening mechanisms 200. The multiple door opening mechanisms 200 may be distributed along the height direction of the device body 100 to increase the force exerted when the door 120 is opened and to improve the stability of the door 120 opening. When multiple doors 120 are provided, the multiple door opening mechanisms 200 may correspond to the multiple doors 120 so that all doors 120 can open automatically.

[0119] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0120] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0121] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0122] In the description of this application, "multiple" means two or more.

[0123] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0124] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0125] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0126] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A door opening mechanism, installed on the equipment body, characterized in that, The door opening mechanism includes: A power component is rotatably mounted on the equipment body, and the power component is provided with a first working surface and a second working surface distributed circumferentially. The door opening component is electrically coupled to the power component to reciprocate between the retracted position and the ejected position under the drive of the power component. A trigger switch and a trigger element, wherein the trigger element is rotatably mounted on the device body under the drive of the power element, and the rotation axis of the trigger element is parallel to the rotation axis of the power element; When the door opening member is in the retraction position or the ejection position, the triggering member contacts the first working surface and triggers the triggering switch; when the door opening member is driven by the power member to move between the retraction position and the ejection position, the triggering member contacts the second working surface and causes the triggering switch to de-trigger.

2. The door opening mechanism according to claim 1, characterized in that, Along the rotation plane of the power component, the trigger is disposed on the periphery of the power component, and the first working surface is closer to the rotation axis of the power component than the second working surface.

3. The door opening mechanism according to claim 2, characterized in that, The trigger includes a first contact portion acting on the power component and a second contact portion acting on the trigger switch; along the rotation plane of the power component, the first contact portion and the second contact portion are distributed on both sides of the rotation axis of the trigger.

4. The door opening mechanism according to claim 3, characterized in that, The trigger includes: A trigger rod, wherein the first contact portion and the second contact portion are respectively disposed at both ends of the trigger rod; A rotating rod is rotatably mounted on the device body, and one end of the rotating rod is connected to the middle of the trigger rod.

5. The door opening mechanism according to any one of claims 1-4, characterized in that, The first working surface is provided in two parts; the two first working surfaces are distributed circumferentially at both ends of the second working surface.

6. The door opening mechanism according to claim 5, characterized in that, The power component includes a gear portion, a cam portion, and two recessed portions; along the circumference of the power component, the two recessed portions are respectively disposed between the two ends of the gear portion and the cam portion, the concave surfaces of the two recessed portions form two first working surfaces, and the convex surface of the cam portion forms a second working surface; The door opening component is provided with a rack portion that meshes with the gear portion.

7. The door opening mechanism according to claim 6, characterized in that, The gear section and the rack section are respectively provided with a first anti-mistake part and a second anti-mistake part that cooperate with each other.

8. The door opening mechanism according to claim 6, characterized in that, It also includes a drive device, the output end of which is provided with a first transmission wheel rotatably mounted on the main body of the device; The power component includes a second transmission wheel coaxially connected to the gear section. The second transmission wheel meshes with the first transmission wheel, and during the process of the door opening component moving from the retracted position to the ejected position, the speed ratio between the first transmission wheel and the second transmission wheel tends to decrease.

9. The door opening mechanism according to claim 8, characterized in that, Both the first transmission wheel and the second transmission wheel are eccentrically arranged; and / or, both the first transmission wheel and the second transmission wheel are non-circular gears.

10. The door opening mechanism according to any one of claims 1-4, characterized in that, Also includes: An elastic element is connected between the device body and the trigger element, and the elastic element is used to apply a force to the trigger element to drive the trigger element into contact with the power element.

11. The door opening mechanism according to any one of claims 1-4, characterized in that, It also includes a control board and a motor, the motor being dynamically coupled to the power component to drive the power component to rotate; The trigger switch is integrated on the control board; or, both the trigger switch and the motor are integrated on the control board.

12. An electrical appliance, characterized in that, include: The equipment body includes a housing and a door, with the door covering the housing; The door opening mechanism as described in any one of claims 1-11 is installed in the housing or the door, and the door opening member drives the door to open relative to the housing during the process of moving from the retraction position to the ejection position.

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